and I wouldn't read too much into the post you have just replied to.
You can sell or otherwise get rid of your computer as you wish, and if you do get rid of it you can let the Operating System already installed on it go with it, or reformat the drives then either reinstall the OS or leave the drives blank, as you wish. If you keep the OS's installation CD or DVD then the OS needs to be wiped off the hard drive, but other than that, you can even give those installation disks away as long as they are not used anywhere else.
The same with other software, for example, Microsoft Office. If you have the CDs then they are yours to dispose of as you want, as long as that Office software is not being used elsewhere.
What that poster said is wrong and very misleading.
I hope that helps.
Mark

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